loess low hill area 黄土低山丘陵
low hill red soil area 低丘红壤区
low-hill red earth area 低丘红壤区
low hill heavy rain area 低山暴雨区
These provide some theoretical bases for managing comprehensively Loess Low Hill area.
为黄土低山丘陵区的综合治理提供根据。
The investigation of low hill red soil area.
低丘红壤资源调查。
Sichuan Basin may be divided into east Sichuan parallel ridge-and-valley area, low mountain-hill area around the basin, central Sichuan hill area and west Sichuan plain area.
四川盆地可分为川东平行岭谷区、盆周低山丘陵区、川中丘陵区、川西平原区。
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